Simplify. write each answer in sciei notation. i 1) (7.23 x 10^-3)^3 2) (4.2 x 10^3)^-3 how am i supposed to solve this

Liz is shipping a package to her friend. the maximum weight of a medium flat-rate box is 20 pounds, including the box which weighs 6 ounces. write and solve an inequality to describe the possible weight in pounds, w, of the contents that liz will ship to her friend if she must use a medium flat-rate box. use the drop-down menus to explain your answer.